213423342 has 16 divisors (see below), whose sum is σ = 465651072. Its totient is φ = 64673720.

The previous prime is 213423307. The next prime is 213423347. The reversal of 213423342 is 243324312.

213423342 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213423347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616778 + ... + 1616909.

It is an arithmetic number, because the mean of its divisors is an integer number (29103192).

Almost surely, 2^213423342 is an apocalyptic number.

213423342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213423342 is an abundant number, since it is smaller than the sum of its proper divisors (252227730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213423342 is a wasteful number, since it uses less digits than its factorization.

213423342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233703.

The product of its digits is 3456, while the sum is 24.

The square root of 213423342 is about 14609.0157779366. The cubic root of 213423342 is about 597.6046554890.

Adding to 213423342 its reverse (243324312), we get a palindrome (456747654).

The spelling of 213423342 in words is "two hundred thirteen million, four hundred twenty-three thousand, three hundred forty-two".